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Cu(II) Doped Multi-Walled Carbon Nanotubes as Sensing Materials for Toluene Detection

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4 Author(s)
Guo Miao ; Inst. of Biomed. Eng. & Instrum., Hangzhou Dianzi Univ., Hangzhou ; Wu Kai-hua ; Pan Min ; Chen Yu-quan

Cucl2 doped multi-walled carbon nanotubes (MWCNTs) were applied as sensing materials to detect toluene (C7H8) gas at room temperature. A series of pretreatments including purification and sonication assisted liquid doping on MWCNTs were performed before carrying out sensing experiments. Then the processed MWCNTs were coated on the screen-printed carbon electrodes. The electrical conductivity of the dried MWCNTs film decreased when the electrode was exposed to toluene. There is a good linear correlation between the decreasing amplitude and the toluene concentration. Preliminarily, some sensing mechanisms of the carbon nanotubes were discussed.

Published in:

Bioinformatics and Biomedical Engineering, 2008. ICBBE 2008. The 2nd International Conference on

Date of Conference:

16-18 May 2008